some of these replies are just ridiculous. if, instead, the OP had stated that his dog ran away, i wonder what the responses would have been..... he's obviously done this in the past and hasn't had problems. in any case, the neighbor is horrible if he's trying to poison animals. I really hope you find your dog and everything works out. next time, be more careful. with an as$hole neighbor like that, i would never let my dog free again.